Which function does not have period 2pi? y = sec x
y = cos x
y = tan x <--- correct but why?
y = sin x

Use the multiplier method to incrases £258 by 43%

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Math each whole number with a rational, exponential expression